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package cn.nju.zyy.basic;

/**
 *
 * @author yingyzhang
 */
public class LiftOff implements Runnable {
    
    private static int taskCount = 0;
    private final int id = taskCount++;
    
    protected int countDown = 10; // Default
    
    public LiftOff() {}
    
    public LiftOff(int countDown) {
        this.countDown = countDown;
    }
    
    public String status() {
        return "#" + id + "(" +
                (countDown > 0 ? countDown : "Liftoff!") + "). ";
    }

    @Override
    public void run() {
        while (countDown-- > 0) {
            System.out.print(status());
            Thread.yield();
        }
    }
    
}
